Thermo-treatment of wood (dry edged board) under own patented technology WESTWOOD (processing by a vapour at temperatures of 230-240 degrees C). Two plants are located at USA. Wood gets properties of a water-repulsion, dimensional stability and protection against microorganisms. Application - windows, doors, flooring (including bathrooms and kitchens), outside projects, construction, decks, and many others (the catalog of production is on the site www.westwoodcorporation.com).